S1 (Berlin)
# S1 (Berlin)

The S1 is a line on the Berlin S-Bahn. It operates over:

* the Prussian Northern Railway, opened on 10 July 1877 and electrified in 1925,
* a short section of the Berlin-Szczecin railway, opened on 1 August 1842 and electrified in 1924,
* the Nord-Süd-Tunnel, opened on 28 May 1936 from Humboldthain to Unter den Linden and on 9 October 1939 to Anhalter Bahnhof and the junction with the Wannsee Railway and
* the Wannsee Railway, opened on 1 June 1874 from Zehlendorf to Wannsee and on 1 October 1891 from Potsdamer Bahnhof to Zehlendorf (next to the Potsdam trunk line, opened on 29 October 1838) and electrified on 15 May 1933.

Since becoming a numbered route in 1984, the S1's line colour is pink.

## Service history

The S1 was created along with the S2 and S3 on 9 January 1984, when the Berliner Verkehrsbetriebe (BVG) took over the S-Bahn network from the East German Deutsche Reichsbahn in West Berlin: however, the dilapidated state of the West Berlin network at the time meant that the first S1 trains did not run until 1 May 1985, when the line between Wannsee and Anhalter Bahnhof reopened.

In 1990, the S1 was extended to Frohnau, while the S2 was curtailed to Gesundbrunnen.

## Gallery

* Wannsee Railway at Saarstraße
* Mexikoplatz station
